This looks like a very interesting build for a Tanking Templar. Though it looks like the damage output does not look like it will be very high and would take a while to kill. It is better to be surrounded than fighting one enemy at a time with this build.

Iron Will seems okay and adds more spell damage. But I wouldn't say that you have A LOT of strength, because passive skill tree you made only gives you 140 STR.

I feel like this build needs Ghost Reaver and Life Leech to Molten Shell, you would continuously regain back your energy shield.